devos/shell.nix

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Nix
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{ pkgs ? import <nixpkgs> { } }:
let
configs = "${toString ./.}#nixosConfigurations";
hostname = pkgs.lib.fileContents /etc/hostname;
build = "config.system.build";
rebuild = pkgs.writeShellScriptBin "rebuild" ''
if [[ -z $1 ]]; then
echo "Usage: $0 [host] {switch|boot|test|iso}"
elif [[ $1 == "iso" ]]; then
nix build ${configs}.niximg.${build}.isoImage
elif [[ -z $2 ]]; then
sudo -E nix run -vv ${configs}.${hostname}.${build}.toplevel -c switch-to-configuration $1
else
sudo -E nix run -vv ${configs}.$1.${build}.toplevel -c switch-to-configuration $2
fi
'';
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in pkgs.mkShell {
nativeBuildInputs = with pkgs; [ git git-crypt nixFlakes rebuild ];
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shellHook = ''
mkdir -p secrets
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mkdir -p users
'';
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NIX_CONF_DIR = let
current = pkgs.lib.optionalString (builtins.pathExists /etc/nix/nix.conf)
(builtins.readFile /etc/nix/nix.conf);
nixConf = pkgs.writeTextDir "opt/nix.conf" ''
${current}
experimental-features = nix-command flakes ca-references
'';
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in "${nixConf}/opt";
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}